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Description

USA ASTM CK20 Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant, for General Application and CK20 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: CK20
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy CK20 ASTM USA Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant, for General Application
CF10MC
CF10SMnN
CD3MWCuN
CD4MCu
CE8MN
CE20N
CG3M
CG6MMN
CG8M
CK3MCuN

Chemical composition(mass fraction)(wt.%) of the CK20

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%)
0.04-0.20 1.75 1.5 0.04 0.04 23.0-27.0 19.0-22.0 ≤0.50

Mechanical Properties of steel grade CK20

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
764 (≥) 524 (≥) 21 34 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical Properties of steel grade CK20

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
42 - -     0.14 -  
624 152 - 23.3 244   -  
462 - 31 33.2   224 242

Heat Treatment of steel grade CK20

Heat treated : 1271°C - 1218°C

Technological Curves of steel grade CK20

Cross Reference Table (Equivalent Grade) of CK20

Grade Standard Country Application
ASTM CK20 AISI USA
CK20 ASTM USA Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant, for General Application
CK20 ASTM USA Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant, for General Application

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